Pinion Nut Size: 1-1/4" Featured Products: GM 8.2"/8.5"/8.6" (Chevy) 10 Bolt / Aluminum Girdle Cover / TA Performance / TA_1807 . Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. Reply Quote. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 2. unbolt pinion nut. 1988 C1500 Silverado, 5.7L with some go fast parts. Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. Final torque on the pinion nut is necessary to compress the crush sleeve. 8-10 ft lbs: None: None: GM 12 Bolt Car: Torque: Lubricant: Thread Locker: Main Caps: OEM Housing: . We look forward to serving you! 5 - 8 : Ring Gear Bolt Torque (Foot lbs) 120 : Bearing Cap Torque (Foot lbs) 135 : Pinion Nut Torque: Tighten as necessary to obtain correct preload: Pinion Bearing Retainer Torque (Foot lbs) :65 : . GM 8.5" 10 Bolt / Ring & Pinion Gear Set w/ Master Bearing . Order our high performance synthetic oil and friction additive combo kit at time of order for ring and pinion or bearing overhaul kit and pay only $49.95 plus S&H, a $54.00 value. GM 8.6" differentials can be installed in a GM 8.5" axle with the proper conversion bearings. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. May 22, 2021 / GM 14 Bolt Specs (all data for SRW truck 14 Bolt axle - others may vary - see table on "different 14 bolts" below) . Lighter and more efficient than its Ford 9-inch and Dana 60 rivals, the 12-bolt enjoys as much use amongst brand-loyal off-roaders as it . Backlash arises when two gear teeth mesh together in order to transmit power from one shaft to another; the teeth need some play to avoid jamming and ensure smooth operation. increments until rotating torque is achieved. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! DIFF MODEL. First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. If it takes a 1/2-inch wrench to remove it, its an 8.2. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. Preload doesn't have any effect on spring stiffness; rather, its used as a way of compensating for springs that are too soft or too stiff. While this article focuses specifically on the GM 8.5 10-bolt rear differential, the parts and processes described herein cover most differential housings.Built from the 1970s through today (the 8.6" 10-bolt is still used in most GM . Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. The "feel" people are way more experienced that you or I so the top one is re-commended. By Albert. The rotational torque spec is between 15-19. By manipulating these two components and their ratio to each other, you can achieve different levels of performance from your vehicle that may suit your individual needs better than stock settings would. If youre looking for a good.economical 10-bolt rearend to rebuild or install into your hot rod, you will need to be able to accurately identify thedifferent units so you dont accidentally come home with a 7.5 or 8.2-inch differential. Uses 28 or 30 spline c-clip axles. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. When looking at the housing from the rear, an 8.5 will have two squared off chunks of casting hanging on each side near the bottom of the differential. Some builders . It involves placing a collapsible spacer between the bearings of the pinion gear, then using a torque wrench to tighten the pinion nut until it reaches the correct amount of pressure or preload on the bearings. when assembling the pinion into place, include the crush sleeve between the two pinion bearings. The pinion nut needs to be torqued to 250 ft/lbs. The date and location of manufacture coding changed in 1971. Originally, gear ratios ranged from 2.41 through 4.10. The purpose of preloading a bearing is to eliminate any existing clearance that has been designed into standard ball bearings by utilizing tension or compression loads applied directly onto each component within the assembly. An important step I like to take is to assemble the pinion and differential case without the crush sleeve or the new pinion nut. The Fora platform includes forum software by XenForo. ft. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. The distinction between these two types of torque can be useful for assessing how well a car will perform in different situations: cars with higher levels of low-end torque are typically better suited for starting from standstill or accelerating quickly; whereas cars with greater amounts of high-end torque are likely more suitable for reaching faster top speeds over long distances. 9 Minutes Read / Data is accurate to the best of our knowledge and is offered as-is with no guarantee. MOPAR: 8.75" x 1.75" pinion: .090. . Ford 9 inch torque specs; Gear Ratio Calculator; Order Forms. The OEM pinion nut is 1 1/4 inches. This distance must be precise; if it is too small, the gears will bind together and cause mechanical stress which can lead to premature wear or failure. Crankshaft Pulley to Hub Bolts 37. Not sure the torque specs on the carrier bearing caps, we red lock-tight them and hit them with the impact pretty hard at work. 440-500 lbs ft and I wouldn't tackle it bring it somewhere where they know what they are doing..I have a four foot torque wrench that goes to 500 but thats one hell of a grunt and you have to hold the flange while doing this. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. For 30 spline pinion axles, PYN10 offers a 10-bolt 8.5" pinion nut that is designed to provide secure and reliable performance in the toughest of conditions. In either case, it is important that this critical adjustment be performed correctly in order to avoid costly repairs or replacements down the line. While deciding on the ideal gear ratio for your bike, it's important to consider that a lower value will provide more comfortable pedaling, as you'll be able to spin the pedals at a higher cadence. CRAWLPEDIA Off-Road Encyclopedia. range. An 8.2 (shown) will have the same contour as the cover. This sleeve must be replaced every time the pinion nut is torqued. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. You can simulate pinion bearing preload by tightening the pinion nut until the proper amount of drag is felt with only motor oil on the pinion . It also has an inner diameter of 1 . lbs.) The amount of backlash varies depending on the quality and cost of the gearhead; more expensive precision gearheads have nearly zero backlash, while an inexpensive model may have as much as one degree or more. The pinion diameter is 1.438 inches, and has 25 splines. Reports from multiple Chevy Bolt owners confirm that on May 28th, 2021, Chevrolet began taking steps to rectify any potential issues with these cars by paying off the original cost and allowing them to be taken off of the road. These are two pinion gears for the 8.5-inch 10-bolt. The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. Or some do it by feel. Dana Technical Service Specs. Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles. It saved me time and effort trying to crush a brand new crush sleeve. These are considered highway gears that are good for top speed, not for off-the-line performance. Currie 44 : Torque: Pinion Nut (Solid Spacer) 250 ft lbs. Once you get close to the right pinion preload, shim thickness adjustments need to be made in the .003 and down range to make adjustments, small increments make a big difference in pinion preload. JavaScript is disabled. I have seen the ring gear bolts, pinion nut and retaining bolt come loose, but never a bearing cap bolt. With the exception of truck differentials with 30-spline axles, andthosecarrying 2.41 and 2.73 gears (series two), the differentials will support all gear ratios without having to change carriers. I have been taking it to ~250-300 ft lbs. You can rest assured knowing that your axle is secured with this high quality product. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. The correct way to do this is to use the yoke lock (part of the setup tool kit we bought) and use a breaker bar with a cheater pipe. The engine roars and the tires dig into the pavement as they work to move your car forward, pushing you back into your seat with tremendous force. This high quality product ensures that your vehicle's rear axle assembly will remain securely fastened and properly aligned during operation, giving you peace of mind when driving on the roads or tracks. Quaility Gears provide guaranteed performance. The PYN10 pinion nut has been specifically designed to fit 30 spline pinions and provide a secure fit and lasting performance. Therefore when dealing with these types of sleeves it's important to make sure they are installed correctly so as not to compromise its integrity or longevity. What happens if you have too much backlash in differential. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. I have a 1993 Suburban K1500. Pinion Nut (Solid Spacer) 28-Spline Pinion - 200 ft lbs. It is well known that altering the gear ratio of a vehicle, whether it be through changing the pinion or spur gear, can have a significant effect on performance. Use the blue medium strength on the retaining bolt and the red on the others. . It is estimated that this specific axle saw use on over 11 million vehicles during its reign of production making it one of the most popular axles ever created by GM for their consumer market line up. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. It has been proven to be reliable in high-performance and high-horsepower applications, but it can also handle occasional abuse from use on the racetrack. Tightening Torque Clamp Load For over a decade, the 8.5-inch 10-bolt was widely used as an axle in many cars and trucks produced by General Motors. At West Coast Differentials we are committed to making your experience with us totally enjoyable. If it checks out you can put your axles back in, C clips on, cross pin and bolt and you are ready to put the cover on and fill it with rear end lube! This ring and pinion install kit comes with new pinion bearings, carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. If you're looking to get the most out of your pickup truck, you may want to consider changing the gear ratios. After it has been properly crushed (by checking the rotating resistance of 19-22 inch pounds on the pinion) there should be at least 150 pounds torque on the pinion nut (or else you pull it apart get another crush sleeve and start over). This means that turning the pedals at the front will turn the back wheel 4.55 times over, which requires quite a bit of effort but allows for fast movement once achieved. Set the preload carefully (see "Set Up Specifications") so that the bearings will have a long life. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. Its strength and durability make it an ideal choice for those who want to take their car out for some fun on the track without having to worry about its performance or reliability. 1. By asking ourselves what makes us different than other companies, our answer is that we deliver the level of customer service that other companies only promise. I don't use it on the bearing cap bolts. Ultimately, both engine power and torque play important roles in determining a cars performance capability as well as its overall efficiency. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. Replace original worn or damaged nuts each time a gear set is changed. Oct 29, 2001. A full range of pinion gears is offered for the Chevy 10- and 12-bolt axle assemblies so you are able to select the correct gear set for your vehicle, application, and setup. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. The lower end of this range will give you a cadence of 90 rpm which translates to an average speed of 30 km/h while the upper end will get you going up to 34 km/h. This assembly featured an 8.2-inch ring gear diameter as well as 28-spline axles which provided adequate strength for these vehicles. Received 16 Likes on 13 Posts. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. Next, attach the pinion nut onto the end of the shaft and use a torque wrench to tighten it to between 110-125 ft/lbs of torque. When working on the assembly of a differential, there are two methods for adjusting the pinion depth. Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. To do this, measure 10 thousandths of an inch on the shim and shift it accordingly. Not only has the 10-bolt rearend proved its worth in high-performance, high-horsepower applications, but it has also been found to be a great unit for street/strip cars. Copyright 2023 Sierra Gear & Axle - Web Design by Zenxeon Technologies, Backlash for Aftermarket gears .006 -.012, Instructions Differential Installation & Setup, Differential Setup & Torque Specifications, GM RPO Codes Axle & Ratio Identification, Measurement Axle Shaft Length & Bolt Circle. Furthermore, this action reflects positively on the company's overall commitment to providing reliable transportation services while ensuring its customers' safety remains paramount at all times. 2429 Mercantile Drive Suite A Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. SPEC Clutches: For That Next Engine Swap Or OEM, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop, Moroso Anti-Roll Kit Is The Right Tool For The, Steer Your Classic Ride Straight With A New CPP Steering, NEW LS Bellhousing For Magnum And T56-Shifted Hot, Fenix Is A Next-Gen 69 Camaro With 1,180, A Brothers Quarrel Results In This Fine 1955 Chevy, Is This Barn Find The Worlds First Corvette? So, when adjusting preload, if it is too loose then the shims should be removed. ring gear bolts torque at 175lb/ft, bearing cap bolts torque at 200lb/ft, and the ring gear backlash should be between .006-.010 for aftermarket gears, .005-.007 for OEM gears. Mikz86TA. Axle Images: Axle Details. Ford 9 inch Torque Specs for Ford 9 inch center Section torque specs. Pinion nut has no torque spec. When installing a new 8.5-inch 10-bolt rear differential, it is important to use the right pinion nut for your application. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. Mgrotel, nice cliff notes. . Our stock 10-bolt was plenty stout to withstand the torture of 165 hp from the ZedSled's stock 350 (yes, that was sarcasm), but we're looking down the barrel at 500 hp from our cammed-up 6.0 swap .
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